# Questions without answers in Others

1
An external variable is globally accessible by all functions has a declaration “extern” associated with it when declared within a function will be initialized to $0$ if not initialized all of these
2
A stable multivibrator are used as comparator circuit squaring circuit frequency to voltage converter voltage to frequency converter
3
The astable multivibrator has two quasi stable states two stable states one stable and one quasi-stable state none of these
4
If space occupied by two strings $s_1$ and $s_2$ in 'C' are respectively $m$ and $n$, then space occupied by string obtained by concatenating $s_1$ and $s_2$ is always less than $m+n$ equal to $m+n$ greater than $m+n$ none of these
5
A hash table has space for $100$ records. Then the probability of collision before the table is $10\%$ full, is $0.45$ $0.5$ $0.3$ $0.34$ (approximately)
6
In what module multiple instances of execution will yield the same result even if one instance has not terminated before the next one has begun? Non reusable module Serially usable Re-enterable module Recursive module
7
What is described by means of DFDs as studied earlier and represented in algebraic form? Data flow Data storage Data structures Data elements
1 vote
8
The process of converting the analog sample into discrete form is called Modulation Multiplexing Quantization Sampling
9
At a room temperature of $300K$, calculate the thermal noise generated by two resistors of $10K\Omega$ and $20K\Omega$ when the bandwidth is $10KHz$. $1.2868\times10^{-6}V, 1.819\times10^{-6}V$ $6.08\times10^{-6}V, 15.77\times10^{-6}V$ $16.66\times10^{-6}V, 2.356\times10^{-6}V$ $1.66\times10^{-6}V, 0.23\times10^{-6}V$
10
A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have $40000$ lines of code. The company needs to determine the effort in person-months needed to develop this software using the basic COCOMO model. The multiplicative factor ... as $1.20$. What is the estimated effort in person-months? $234.25$ $932.50$ $287.80$ $122.40$
11
Amongst the logic families $DTL, TTL, ECL$ and $CMOS$, the family with the least power dissipation is : $CMOS$ $DTL$ $TTL$ $ECL$
12
If a relation is in 2NF and 3NF forms then : no non-prime attribute is functionally dependent on other non-prime attributes no non-prime attribute is functionally dependent on prime attributes all attributes are functionally independent prime attribute is functionally independent of all non-prime attributes
13
An example of a directory found in most $\text{UNIX}$ system is : $\text{usr}$ $\text{waitpid}$ $\text{brk}$ $\text{unmap}$
14
An error message produced by an interactive system should have : always the error code the list of mistakes done by the user displayed a non-judgmental approach the past records of the occurrence of the same mistake
15
Given a parallel algorithm $A$ with computation time $t$, if parallel algorithm $A$ performs $m$ computational operation, then $p$ processors can execute algorithm $A$ in time given by : $t/p$ $mt/p$ $t+(m-t)/p$ $(m-t)/p$
16
With reference to implementation of different association mining algorithms, identify the correct statement : The FP growth method was usually better than the best implementation of the apriori algorithm Apriori algorithm is usually better than CHARM Apriori algorithm is good when the support required is low At very low support the number of frequent items becomes less
17
Consider a typical mobile communication system. If $840$ frequencies are available, how many can be used in a given cell ? $140$ $120$ $84$ $60$
18
Which of the following expression remove hazard form : $xy+z \bar{x}$? $xy+z \bar{x}$ $xy+z \bar{x}$ $xy+z \bar{x}+yz$ $xy+z \bar{x}+wz$
19
Which statement is false regarding data Independence: Hierarchical data model suffers from data Independence. Network model suffers from data Independence. Relational model suffers only from logical data Independence. Relational model suffers only from physical data Independence.
20
In case of Bus/ Tree topology signal balancing issue is overcome by: Strong Transmitter Polling Segmentation Modulation
21
Which of the following techniques are used to control data flow? Windowing Routing RPCs Buffering $1,4$ $2,3,4$ $1,3,4$ $1,2,3,4$
22
TDM is _____. A primary /secondary type protocol A peer/peer protocol A Non-priority peer/peer protocol A priority type protocol
23
Which of the following protocols is used to prevent looping? $OSPF$ Spanning tree $SRB$ Fragment free switching
24
25
The “nice” command is used in Unix: to decrease the priority of a precess. to increase the priority of a process. to get the highest priority. nothing to do with the priorities.
26
Which of the following combination is preferred with respect to cohesion and coupling: low and low low and high high and low high and high
27
Difference between flow-chart and data-flow diagram is: there is no difference usage in high level design and low level design control flow and data flow used in application programs and system programs
Problems with waterfall model are: Real projects rarely follow this model proposes It is often difficult for the customer Working model is available only in the end Developers are delayed unnecessarily Which of the following is true: $1$ and $4$ only $2$ and $3$ only $1$,$2$ and $3$ only $1$,$2$,$3$ and $4$